As governments pour billions into new affordable housing, existing units in disrepair.

MONTREAL — Mercedes Rodriguez says she and her seven kids struggle to sleep at night because of the sounds of mice scurrying in the walls in her apartment in Montreal's east end...

While Quebec and Canada make multibillion-dollar investments into new builds to address the lack of affordable housing, one-third — nearly 21,500 units — of the province’s existing social housing stock is in disrepair. The pace of renovations, meanwhile, isn't keeping up with inflation, leaving advocates concerned that maintenance budgets will be inadequate to address the extent of the issue.